A nurse is collecting data from a client who has heart failure and edema of the lower extremities. Which of the following actions should the nurse take to monitor for pitting edema?

Pitting edema occurs when excess fluid accumulates in the interstitial spaces, commonly seen in conditions such as heart failure due to decreased cardiac output and fluid retention. Assessment of edema helps determine severity of fluid overload and guides treatment decisions such as diuretic therapy and fluid restriction. Nurses evaluate edema by checking whether pressure leaves an indentation in the tissue. Accurate identification of pitting edema is important for monitoring progression and response to treatment. Rationale: A. Lightly pinching the skin over the client’s calf does not effectively assess for pitting edema. This method is more useful for evaluating skin turgor and hydration status rather than fluid accumulation in the tissues. Pitting edema requires sustained pressure to determine whether an indentation remains after release. B. Pressing firmly with the fingertip on edematous areas is the correct method for assessing pitting edema. The nurse applies pressure, usually over bony prominences such as the shin, ankle, or foot, and observes whether an indentation remains after the finger is removed. The depth and duration of the pit help determine the severity of edema. C. Observing the skin color of edematous areas may provide information about circulation or skin integrity but does not specifically determine whether edema is pitting or non-pitting. Color changes can suggest poor perfusion, inflammation, or venous insufficiency, but they are not the primary method for edema assessment. D. Compressing the nail beds of the client’s toes is used to assess capillary refill and peripheral perfusion, not pitting edema. This test evaluates how quickly blood returns to the tissue after pressure is released. It helps assess circulation but does not provide information about interstitial fluid accumulation.